DE3147567C2 - Belichtungssteuerung für eine Kamera - Google Patents

Belichtungssteuerung für eine Kamera

Info

Publication number
DE3147567C2
DE3147567C2 DE3147567A DE3147567A DE3147567C2 DE 3147567 C2 DE3147567 C2 DE 3147567C2 DE 3147567 A DE3147567 A DE 3147567A DE 3147567 A DE3147567 A DE 3147567A DE 3147567 C2 DE3147567 C2 DE 3147567C2
Authority
DE
Germany
Prior art keywords
value
circuit
exposure
comparison circuit
detector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE3147567A
Other languages
German (de)
English (en)
Other versions
DE3147567A1 (de
Inventor
Shigeo Tokio/Tokyi Enomoto
Hitoshi Tokio/Tokyo Hirobe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of DE3147567A1 publication Critical patent/DE3147567A1/de
Application granted granted Critical
Publication of DE3147567C2 publication Critical patent/DE3147567C2/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/081—Analogue circuits
    • G03B7/085—Analogue circuits for control of aperture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/749—Circuitry for compensating brightness variation in the scene by influencing the pick-up tube voltages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/75—Circuitry for compensating brightness variation in the scene by influencing optical camera components

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Diaphragms For Cameras (AREA)
DE3147567A 1980-12-01 1981-12-01 Belichtungssteuerung für eine Kamera Expired DE3147567C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1980172380U JPS5796422U (enrdf_load_stackoverflow) 1980-12-01 1980-12-01

Publications (2)

Publication Number Publication Date
DE3147567A1 DE3147567A1 (de) 1982-06-03
DE3147567C2 true DE3147567C2 (de) 1985-01-10

Family

ID=15940831

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3147567A Expired DE3147567C2 (de) 1980-12-01 1981-12-01 Belichtungssteuerung für eine Kamera

Country Status (4)

Country Link
JP (1) JPS5796422U (enrdf_load_stackoverflow)
DE (1) DE3147567C2 (enrdf_load_stackoverflow)
FR (1) FR2495419B1 (enrdf_load_stackoverflow)
GB (1) GB2091431B (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200017A (en) * 1981-06-03 1982-12-08 Sony Corp Aperture locking device
JPS5999880A (ja) * 1982-11-29 1984-06-08 Canon Inc 撮像装置
DE3342992A1 (de) * 1982-11-29 1984-05-30 Canon K.K., Tokio/Tokyo Bildwandlereinrichtung
JP2501782B2 (ja) * 1983-09-16 1996-05-29 株式会社ニコン 画像走査装置
KR910008286Y1 (ko) * 1988-07-12 1991-10-15 삼성전자 주식회사 비디오 카메라의 자동 노출제어회로

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324779A (en) * 1964-05-26 1967-06-13 Asahi Optical Co Ltd Photoelectric time control shutter circuit for photographic camera
DE1230845C2 (de) * 1964-11-20 1973-07-12 Fernseh Gmbh Schaltungsanordnung zur Regelung des Pegels eines Videosignals
US3555181A (en) * 1968-06-05 1971-01-12 Bell Telephone Labor Inc Automatic video level control employing iris and amplifier gain adjustments
US3651255A (en) * 1969-02-22 1972-03-21 Sony Corp Automatic gain control system for television cameras
NL7701811A (nl) * 1977-02-21 1978-08-23 Philips Nv Televisiekamera voorzien van een diafragma- regeling en een regelbare beeldsignaalver- sterkingsschakeling.
JPS56104579A (en) * 1980-01-23 1981-08-20 Nec Corp Television camera device

Also Published As

Publication number Publication date
FR2495419A1 (fr) 1982-06-04
FR2495419B1 (fr) 1986-06-13
GB2091431B (en) 1984-06-20
GB2091431A (en) 1982-07-28
DE3147567A1 (de) 1982-06-03
JPS5796422U (enrdf_load_stackoverflow) 1982-06-14

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8363 Opposition against the patent
8320 Willingness to grant licences declared (paragraph 23)
8365 Fully valid after opposition proceedings
8339 Ceased/non-payment of the annual fee